無細胞セメント質に見られる成長線の構造に関する観察  [in Japanese] Observations of the Structure of Incremental Lines in Acellular Cementum  [in Japanese]

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Author(s)

    • 李 衍江 LI Yan-Jiang
    • 東京医科歯科大学歯学部第一口腔解剖学教室 First Department of Oral Anatomy, School of Dentistry, Tokyo Medical and Dental University

Abstract

The purpose of this study was to investigate the function of human cementum from a morphological viewpoint. To accomplish this purpose, the incremental lines in human acellular cementum were studied by light microscopy, microradiogram (CMR), scanning electron microscopy, and transmission electron microscopy, and the results were as follows:<BR>1. In acellular cementum, many fine incremental lines of about 0.5μm width were observed.<BR>2. The fine incremental lines were observed running perpendicularly or obliquely to Sharpey's fibers in the acellular cementum.<BR>3. The fine incremental lines observed in acellular cementum were not straight lines but had wave like structure.<BR>4. Each wave observed in the fine incremental lines corresponded to a bundle of Sharpey's fibers.<BR>5. The fine incremental lines observed on Sharpey's fibers in acellular cementum showed specific characteristic features.<BR>6. Despite the fine incremental lines showing a close relationship to the degree of calcification, they also seemed to show a strong relationship to the quality of the organic component of the acellular cementum.<BR>7. Apart from the fine incremental lines which are specific to acellular cementum, incremental lines similar to those observed in cellular cementum were also observed within the acellular cementum. These incremental lines were wider and their degree of calcification was higher.

Journal

  • THE JOURNAL OF THE STOMATOLOGICAL SOCIETY,JAPAN

    THE JOURNAL OF THE STOMATOLOGICAL SOCIETY,JAPAN 63(3), 489-515, 1996-09-30

    The Stomatological society, Japan

References:  68

Cited by:  2

Codes

  • NII Article ID (NAID)
    10008141009
  • NII NACSIS-CAT ID (NCID)
    AN00302674
  • Text Lang
    JPN
  • Article Type
    Journal Article
  • ISSN
    03009149
  • Data Source
    CJP  CJPref  J-STAGE 
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